热镀锌渣回收利用工艺研究进展

发布时间：2018-04-17 06:12

本文选题：热镀锌 + 锌渣　；参考：《表面技术》2017年10期

【摘要】：热镀锌技术是目前钢铁材料防腐蚀的一种有效方法,但是在热镀锌过程中会产生大量热镀锌渣。热镀锌渣是溶解在锌液中的Fe与锌液中的Zn或Al在高温条件下生成的金属间化合物。热镀锌渣中含有大量金属锌,是一种使用价值极高的二次锌资源。但是热镀锌渣不能直接用于工业生产,需要对其进行回收处理。目前,热镀锌渣的回收利用工艺可大致分为火法和湿法。详细介绍了这两种热镀锌渣回收利用工艺的机理及研究进展,阐述了现有热镀锌渣回收工艺中的熔析熔炼法、蒸馏法、真空蒸馏法、化学法和电解法的工艺原理,并对这几种回收提纯工艺的特点进行了总结。阐明了不同回收工艺获得最终锌产品的特点和工艺过程中所用设备的差异。通过对火法和湿法两种回收工艺进行比较,进一步分析了现有锌渣回收处理工艺的优缺点。最后提出综合利用现有锌渣回收工艺的优点,研发新型、高品质、低能耗、高效率、环保的回收工艺是热镀锌渣回收处理技术未来的发展趋势。
[Abstract]:Hot dip galvanizing is an effective method to prevent corrosion of iron and steel materials at present, but a large number of hot dip galvanizing slag will be produced in the process of hot galvanizing.Hot galvanizing slag is an intermetallic compound formed by Fe dissolved in zinc solution and Zn or Al in zinc solution at high temperature.Hot dip galvanizing slag contains a large amount of metal zinc, which is a kind of secondary zinc resource with high use value.But hot galvanizing slag can not be directly used in industrial production, it needs to be recycled.At present, the recovery and utilization process of hot galvanizing slag can be divided into fire process and wet process.The mechanism and research progress of the two kinds of hot dip galvanizing slag recovery processes are introduced in detail. The technological principles of melting out smelting, distillation, vacuum distillation, chemistry and electrolysis in the existing hot dip galvanizing slag recovery process are described.The characteristics of these recovery and purification processes are summarized.The characteristics of the final zinc product obtained by different recovery processes and the differences of the equipment used in the process are expounded.The advantages and disadvantages of the existing zinc slag recovery processes are further analyzed by comparing the two recovery processes.Finally, it is pointed out that comprehensive utilization of the advantages of the existing zinc slag recovery process and the development of a new type of recovery process with high quality, low energy consumption, high efficiency and environmental protection is the development trend of hot dip galvanizing slag recovery technology in the future.
【作者单位】：东北大学冶金学院;
【基金】：国家自然科学基金(51671052)~~
【分类号】：TF813;TG174.44

【相似文献】